A number of people have asked for more details on IEEE Spectrum's digital
clock competition, so we've formulated the following list. Throughout, the
idea is to build a clock that an ordinary person would want to use, in an
ordinary home. That's why we want a display that can be read with ease
from across a room.
Operating environment and other specs for IEEE Spectrum's Digital
Clock Competition:
--between 10 and 50 degrees C
--between 0 and 100 percent relative humidity
--with seven-segment LED display, no smaller than 0.56 inches
--no limit on power
--calibration should be within the grasp of a layman
--lacking an oscilloscope here in the office, we will check
accuracy against a WWVB or GPS signal (other suggestions--even volunteers
to help in the judging--are welcome)
--parts to be available from any of the big distributors
(RadioShack, Mouser, DigiKey, Maplin, etc.) or, in sufficient quantities
(100s, say) from a surplus store
Philip E. Ross
Senior editor
IEEE Spectrum Magazine
212 419 7562
http://www.spectrum.ieee.org
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